JPH0987778A - Production of magnesium base composite material - Google Patents
Production of magnesium base composite materialInfo
- Publication number
- JPH0987778A JPH0987778A JP26798895A JP26798895A JPH0987778A JP H0987778 A JPH0987778 A JP H0987778A JP 26798895 A JP26798895 A JP 26798895A JP 26798895 A JP26798895 A JP 26798895A JP H0987778 A JPH0987778 A JP H0987778A
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- composite material
- matrix
- molten metal
- reinforcing material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ＭｇまたはＭｇ合
金をマトリックス（基材）とするＭｇ基複合材料の製造
方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a Mg-based composite material using Mg or a Mg alloy as a matrix (base material).
【０００２】[0002]
【従来の技術】金属をマトリックスとする複合材料の製
造方法のうち、代表的なものとして溶湯撹拌法、粉末冶
金法、スクイズキャスト法等を挙げることができる。さ
らに最近、ＭｇまたはＭｇ合金をマトリックスとする金
属基複合材料の製造方法が開発されている（特願平６−
１４４１６４号）。この方法は、複合化に際して浸透助
材を用いることを特徴とする。その複合化のメカニズム
は、浸透助材とＭｇまたはＭｇ合金溶湯が発熱を伴って
反応することにより局所的に高温となり、強化材とＭｇ
またはＭｇ合金溶湯との濡れ性が改善され、強化材粉末
中に金属溶湯が浸透し、複合化が行われるというもので
ある。2. Description of the Related Art Among the methods for producing a composite material having a metal as a matrix, typical examples include a melt stirring method, a powder metallurgy method, a squeeze casting method and the like. More recently, a method of producing a metal-based composite material using Mg or a Mg alloy as a matrix has been developed (Japanese Patent Application No. 6-
144164). This method is characterized in that a permeation aid is used in forming the composite. The mechanism of the compounding is that the permeation aid and the Mg or Mg alloy melt react with heat to locally raise the temperature, and the strengthening material and Mg
Alternatively, the wettability with the molten Mg alloy is improved, and the molten metal penetrates into the reinforcing material powder to form a composite.
【０００３】[0003]
【発明が解決しようとする課題】上記のメカニズムによ
れば、ＭｇまたはＭｇ合金からなる金属溶湯と発熱反応
を起こす物質であれば、浸透助材として利用できる可能
性がある。しかし、実際には、ａ）強化材と金属溶湯と
の濡れ性を改善させるのに必要な発熱量を伴わなければ
ならない、ｂ）強化材よりも細い粒径のものが好まし
い、等の条件があるため、実用に資する浸透助材はそれ
程多くはない。現状で上記ａ）およびｂ）の条件を満た
す最も優れた浸透助材は、シリカ（ＳｉＯ2 ）と考えら
れる。しかし、シリカ（ＳｉＯ2 ）は、Ｚｒ（ジルコニ
ウム）を含有するＭｇ合金を用いた場合の浸透助材とし
て使用することができない。ＳｉによってＺｒの効果が
失われるからである。According to the above mechanism, any substance that causes an exothermic reaction with the molten metal of Mg or Mg alloy may be used as a penetration aid. However, in reality, conditions such as a) the heat generation amount necessary to improve the wettability between the reinforcing material and the molten metal must be accompanied, and b) the particle diameter is smaller than that of the reinforcing material. Therefore, there are not so many penetration aids that are useful for practical use. At present, the most excellent penetration aid satisfying the above conditions a) and b) is considered to be silica (SiO 2 ). However, silica (SiO 2 ) cannot be used as a penetration aid when using a Mg alloy containing Zr (zirconium). This is because the effect of Zr is lost by Si.
【０００４】また、浸透を生じさせるのに必要な浸透助
材の量は、図２に示すように浸透助材の粒径が小さい
程、少なくてすむことが実験の結果から判明している。
しかし、シリカ（ＳｉＯ2 ）では５μｍ以下の細粒の入
手が困難であるか、または入手できても非常に高価であ
る。したがって、浸透助材として、粒径が小さくてしか
も安価な材料が望まれている。Further, it has been found from the results of experiments that the amount of the penetration aid required for causing the penetration can be smaller as the particle size of the penetration aid is smaller as shown in FIG.
However, it is difficult to obtain fine particles of 5 μm or less with silica (SiO 2 ), or even if they are available, they are very expensive. Therefore, an inexpensive material having a small particle size is desired as a penetration aid.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するため
に、請求項１に記載のＭｇ基複合材料の製造方法は、強
化材粉末と酸化チタンの混合粉末と、ＭｇまたはＭｇ合
金からなるマトリックス金属溶湯を接触させ、該マトリ
ックス金属溶湯を該強化材粉末に浸透させることを特徴
とする。請求項２に記載のＭｇ基複合材料の製造方法
は、請求項１に記載の製造方法であって、強化材粉末が
ＳｉＣであることを特徴とする。In order to solve the above-mentioned problems, the method for producing a Mg-based composite material according to claim 1 is a matrix composed of a mixed powder of a reinforcing material powder and titanium oxide and a Mg or Mg alloy. It is characterized in that the molten metal is brought into contact with the molten metal of the matrix to penetrate into the reinforcing material powder. A manufacturing method of the Mg-based composite material according to claim 2 is the manufacturing method according to claim 1, wherein the reinforcing material powder is SiC.
【０００６】[0006]
【発明の実施の形態】実用Ｍｇ合金には、２つの大きな
系列がある。一つはＭｇ−Ａｌ系合金（ＡＳＴＭ規格の
ＡＺ９１、ＡＭ６０、ＡＳ４１等）であり、他の一つは
Ｍｇ−Ｚｒ（ジルコニウム）系合金（ＡＳＴＭ規格のＺ
Ｋ６１、ＺＥ４１、ＱＥ２２、ＷＥ５４等）である。Ｍ
ｇ−Ｚｒ系合金では、Ｚｒ（ジルコニウム）が溶湯中に
晶出し、これが結晶の核となることにより、結晶粒を微
細化し、機械的性質を向上させる。したがって、Ｍｇ−
Ｚｒ系合金には、Ｚｒと化合物をつくるＣｕ、Ａｌ、Ｓ
ｉ等の元素は添加できない。化合物になるとＺｒの効果
が失われてしまうからである。DETAILED DESCRIPTION OF THE INVENTION There are two major series of practical Mg alloys. One is a Mg-Al based alloy (ASTM standard AZ91, AM60, AS41, etc.), and the other is a Mg-Zr (zirconium) based alloy (ASTM standard Z.
K61, ZE41, QE22, WE54, etc.). M
In the g-Zr-based alloy, Zr (zirconium) is crystallized in the molten metal and becomes a nucleus of the crystal, thereby making the crystal grains finer and improving the mechanical properties. Therefore, Mg-
Zr-based alloys include Cu, Al, and S that form compounds with Zr.
Elements such as i cannot be added. This is because the effect of Zr is lost when it becomes a compound.
【０００７】このような中、本発明者は、新しい浸透助
材として酸化チタンが有効であることを見いだした。酸
化チタンもＭｇとテルミット反応を起こして発熱する。
ところが、生成物は、ＭｇＯとＴｉであり、ＴｉはＺｒ
と化合物を生成しないため、Ｚｒの効果を損なわない。
また、Ｍｇ−Ａｌ系合金をマトリックスとした場合、Ｔ
ｉは溶湯中のＡｌと反応してＴｉとＡｌの金属間化合物
（Ｔｉ3 Ａｌ、ＴｉＡｌ、ＴｉＡｌ3 ）を生成し、これ
がＭｇ基複合材料の強化に寄与する。Under these circumstances, the present inventors have found that titanium oxide is effective as a new penetration aid. Titanium oxide also causes a thermite reaction with Mg and generates heat.
However, the products are MgO and Ti, and Ti is Zr.
Since it does not form a compound, the effect of Zr is not impaired.
When using a Mg-Al alloy as a matrix, T
i reacts with Al in the molten metal to form intermetallic compounds of Ti and Al (Ti 3 Al, TiAl, TiAl 3 ), which contributes to strengthening the Mg-based composite material.
【０００８】酸化チタンの中でもＴｉＯ2 （アナターゼ
型およびルチル型）は、白色顔料として広く普及してお
り、また、主流がサブミクロン粒径（１μｍ以下の粒
径）のものであるため、微細粒のＴｉＯ2 を安価に入手
することができる。本発明で用いる強化材粉末として
は、ＳｉＣ、Ｃ（カーボン）、ＴｉＡｌ（チタンアル
ミ）等を用いる。粒径は０．１〜１００μｍ程度のもの
を用いる。０．１μｍ未満では、金属溶湯の粘性が高く
なり過ぎて実用に適さず、１００μｍを超えると、Ｍｇ
基複合材の強度が低下する。強化材粉末と酸化チタンの
混合比は、容量比で９９：１〜１０：９０である。混合
比が１０：９０を超えると浸透速度が遅くなり、９９：
１未満であると浸透が起こらない。Ｍｇ合金としては、
ＡＺ９１、ＺＫ６１、ＱＥ２２等を挙げることができ
る。Among titanium oxides, TiO 2 (anatase type and rutile type) is widely used as a white pigment, and since the main stream has a submicron particle size (particle size of 1 μm or less), it has a fine particle size. TiO 2 can be obtained at low cost. As the reinforcing material powder used in the present invention, SiC, C (carbon), TiAl (titanium aluminum) or the like is used. The particle size is about 0.1 to 100 μm. If it is less than 0.1 μm, the viscosity of the molten metal becomes too high and it is not suitable for practical use.
The strength of the base composite material decreases. The volume ratio of the reinforcing material powder to titanium oxide is 99: 1 to 10:90. When the mixing ratio exceeds 10:90, the permeation rate becomes slow, and 99:
If it is less than 1, penetration does not occur. As a Mg alloy,
Examples thereof include AZ91, ZK61, QE22 and the like.
【０００９】[0009]
【実施例】実施例１ 強化材としてＳｉＣ粒子（粒径８μｍ）を用い、このＳ
ｉＣ粒子に対して１０容量％のアナターゼ型Ｔｉ０
2 （粒径０．４μｍ）を浸透助材として均一に混合し
た。マトリックス金属としては、ＡＺ９１合金（Ｍｇ−
９％Ａｌ−１％Ｚｎ合金）を用い、図１に示すようなレ
イアウトでＡＺ９１合金を６３０℃で溶解したところ、
強化材粉末中に溶湯が浸透した。ここで、図１について
説明すると、Ａｒガスで満たされたチャンバー１内に
は、るつぼ台５上に溶解るつぼ３が置かれており、溶解
るつぼ３の中には、ＭｇまたはＭｇ合金６と、強化材と
酸化チタンからなる混合粉末７が入れられており、混合
粉末７にはガス抜きパイプ２が差し込まれている。誘導
コイル４によってＭｇまたはＭｇ合金は加熱され、溶湯
となって混合粉末７中に浸透する。 Example 1 SiC particles (particle size 8 μm) were used as a reinforcing material, and
10% by volume of anatase type TiO with respect to iC particles
2 (particle size 0.4 μm) was uniformly mixed as a penetration aid. As the matrix metal, AZ91 alloy (Mg-
9% Al-1% Zn alloy), and AZ91 alloy was melted at 630 ° C. in a layout as shown in FIG.
The molten metal penetrated into the reinforcement powder. Here, referring to FIG. 1, a melting crucible 3 is placed on a crucible base 5 in a chamber 1 filled with Ar gas, and in the melting crucible 3, Mg or Mg alloy 6 and A mixed powder 7 made of a reinforcing material and titanium oxide is put therein, and the degassing pipe 2 is inserted into the mixed powder 7. The induction coil 4 heats the Mg or the Mg alloy to form a molten metal that penetrates into the mixed powder 7.
【００１０】複合化部の金属組織（１％硝酸腐食）の顕
微鏡写真（倍率１０００倍）を図３に示す。灰色部はＳ
ｉＣ粒子を表し、白色部はマトリックス（ＡＺ９１合
金）を表す。白色部で表されたマトリックス中にＭｇＯ
とＴｉ−Ａｌ系金属間化合物が微細粒子として分散した
組織となっている。FIG. 3 shows a photomicrograph (magnification: 1000 times) of the metal structure (corrosion of 1% nitric acid) of the composite part. The gray part is S
It represents iC particles, and the white part represents a matrix (AZ91 alloy). MgO in the matrix represented by the white part
And a Ti-Al intermetallic compound are dispersed as fine particles.
【００１１】実施例２ 強化材としてＳｉＣ粒子（粒径１３μｍ）を用い、この
ＳｉＣ粒子に対して５容量％のルチル型ＴｉＯ2 （粒径
０．４μｍ）を均一に混合した。マトリックスとして
は、ＺＫ６１合金（Ｍｇ−６％Ｚｎ−１％Ｚｒ）を用
い、図１に示すようなレイアウトでＺＫ６１合金を６７
０℃で溶解したところ、強化材粉末中に金属溶湯が浸透
した。その後、撹拌翼を用いて機械的撹拌を加え、強化
材をＺＫ６１合金溶湯中に均一に分散させ、溶湯温度を
７３０℃まで上昇させた後、鋳型に注湯した。その金属
組織を調べたところ、結晶粒径は３０μｍ程度であり、
Ｚｒの効果が損なわれていないことが確認された。 Example 2 SiC particles (particle diameter 13 μm) were used as a reinforcing material, and 5% by volume of rutile type TiO 2 (particle diameter 0.4 μm) was uniformly mixed with the SiC particles. As the matrix, ZK61 alloy (Mg-6% Zn-1% Zr) is used, and ZK61 alloy is used in the layout as shown in FIG.
When melted at 0 ° C., the molten metal penetrated into the reinforcement powder. Then, mechanical agitation was applied using a stirring blade to uniformly disperse the reinforcing material in the ZK61 alloy melt, raise the melt temperature to 730 ° C., and then pour it into the mold. When the metal structure was examined, the crystal grain size was about 30 μm,
It was confirmed that the effect of Zr was not impaired.
【００１２】[0012]
【発明の効果】本発明によれば、結晶粒微細化効果をも
つＺｒを含有するＭｇ合金であっても、浸透助材を用い
た複合材料の製造方法を適用することができる。また、
Ａｌを含有するＭｇ合金に本発明を適用することによっ
て、マトリックス中に微細なＭｇＯとＡｌ−Ｔｉ系金属
間化合物が分散して強化された複合材料を得ることがで
きる。さらに、１μｍ以下の粒子径の酸化チタンは、安
価に入手することができ、また、粒子径が小さいことに
よって添加量が少なくてすむため、経済的にも有利であ
る。EFFECTS OF THE INVENTION According to the present invention, the method of manufacturing a composite material using a penetration aid can be applied even to a Mg alloy containing Zr having a grain refining effect. Also,
By applying the present invention to a Mg alloy containing Al, it is possible to obtain a reinforced composite material in which fine MgO and Al—Ti based intermetallic compound are dispersed in a matrix. Further, titanium oxide having a particle size of 1 μm or less can be obtained at low cost, and since the addition amount is small due to the small particle size, it is economically advantageous.
【図１】ＳｉＣ粒子（粒径８μｍ）を強化材として用い
た場合の、浸透助材としてのＳｉＯ2 粒子の粒径と、浸
透が起こるのに必要なＳｉＯ2 の添加量の関係を示す図
である。FIG. 1 is a diagram showing the relationship between the particle size of SiO 2 particles as a penetration aid and the addition amount of SiO 2 necessary for penetration when SiC particles (particle size 8 μm) are used as a reinforcing material. Is.
【図２】浸透によるＭｇ基複合材製造装置の概略を示す
図である。FIG. 2 is a diagram showing an outline of a Mg-based composite material manufacturing apparatus by infiltration.
【図３】顕微鏡によって撮影されたＭｇ基複合材料（マ
トリックス：ＡＺ９１、強化材：粒径８μｍのＳｉＣ粒
子、浸透助材：粒径０．４μｍのアナターゼ型Ｔｉ
Ｏ2）を表す図である。FIG. 3: Mg-based composite material photographed by a microscope (matrix: AZ91, reinforcement: SiC particles with a particle size of 8 μm, penetration aid: anatase-type Ti with a particle size of 0.4 μm)
O 2) is a diagram illustrating a.
１ チャンバー ２ ガス抜きパイプ ３ 溶解るつぼ ４ 誘導コイル ５ るつぼ台 ６ ＭｇまたはＭｇ合金 ７ 強化材と酸化チタンの混合粉末 1 chamber 2 degassing pipe 3 melting crucible 4 induction coil 5 crucible stand 6 Mg or Mg alloy 7 mixed powder of reinforcement and titanium oxide
Claims (2)
ＭｇまたはＭｇ合金からなるマトリックス金属溶湯を接
触させ、該マトリックス金属溶湯を該混合粉末に浸透さ
せるＭｇ基複合材料の製造方法。1. A mixed powder of reinforcing material powder and titanium oxide,
A method for producing an Mg-based composite material, which comprises contacting a matrix metal melt made of Mg or a Mg alloy and allowing the matrix metal melt to penetrate into the mixed powder.
する請求項１に記載のＭｇ基複合材料の製造方法。2. The method for producing a Mg-based composite material according to claim 1, wherein the reinforcing material powder is SiC.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26798895A JPH0987778A (en) | 1995-09-22 | 1995-09-22 | Production of magnesium base composite material |
| US08/614,157 US5791397A (en) | 1995-09-22 | 1996-03-12 | Processes for producing Mg-based composite materials |
| EP96460012A EP0765946A1 (en) | 1995-09-22 | 1996-03-13 | Processes for producing Mg-based composite materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26798895A JPH0987778A (en) | 1995-09-22 | 1995-09-22 | Production of magnesium base composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0987778A true JPH0987778A (en) | 1997-03-31 |
Family
ID=17452358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26798895A Pending JPH0987778A (en) | 1995-09-22 | 1995-09-22 | Production of magnesium base composite material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0987778A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012177074A3 (en) * | 2011-06-23 | 2013-04-04 | 연세대학교 산학협력단 | Alloy material in which are dispersed oxygen atoms and a metal element of oxide-particles, and production method for same |
| KR101341352B1 (en) * | 2011-06-23 | 2013-12-13 | 연세대학교 산학협력단 | Magnesium material having improved mechanical properties and corrosion-resistance |
| KR101449928B1 (en) * | 2012-06-18 | 2014-10-16 | 연세대학교 산학협력단 | Alloy material having improved properties through heat treatment and method of manufacturing the same |
| CN114369741A (en) * | 2022-01-04 | 2022-04-19 | 湖南化工职业技术学院（湖南工业高级技工学校） | SiC inoculation treatment process of Mg-3.0Zn medical magnesium alloy |
-
1995
- 1995-09-22 JP JP26798895A patent/JPH0987778A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012177074A3 (en) * | 2011-06-23 | 2013-04-04 | 연세대학교 산학협력단 | Alloy material in which are dispersed oxygen atoms and a metal element of oxide-particles, and production method for same |
| KR101341352B1 (en) * | 2011-06-23 | 2013-12-13 | 연세대학교 산학협력단 | Magnesium material having improved mechanical properties and corrosion-resistance |
| US11066730B2 (en) | 2011-06-23 | 2021-07-20 | Industry-Academic Cooperation Foundation, Yonsei University | Alloy material in which are dispersed oxygen atoms and a metal element of oxide-particles, and production method for same |
| KR101449928B1 (en) * | 2012-06-18 | 2014-10-16 | 연세대학교 산학협력단 | Alloy material having improved properties through heat treatment and method of manufacturing the same |
| CN114369741A (en) * | 2022-01-04 | 2022-04-19 | 湖南化工职业技术学院（湖南工业高级技工学校） | SiC inoculation treatment process of Mg-3.0Zn medical magnesium alloy |
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